Usbasploader bootloader option addition (#6304)

* Added USBasp bootloader option for USBasploader

* author comment

* ifdef fix :)

* Add usbasp target

* Update docs/flashing.md

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update docs/flashing.md

Co-Authored-By: fauxpark <fauxpark@gmail.com>

* Update docs/flashing.md

Co-Authored-By: fauxpark <fauxpark@gmail.com>
This commit is contained in:
yiancar 2019-07-16 03:11:59 +01:00 committed by Drashna Jaelre
parent 7d557a0514
commit 3538955778
6 changed files with 78 additions and 37 deletions

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@ -76,6 +76,10 @@ ifeq ($(strip $(BOOTLOADER)), bootloadHID)
OPT_DEFS += -DBOOTLOADER_BOOTLOADHID
BOOTLOADER_SIZE = 4096
endif
ifeq ($(strip $(BOOTLOADER)), USBasp)
OPT_DEFS += -DBOOTLOADER_USBASP
BOOTLOADER_SIZE = 4096
endif
ifdef BOOTLOADER_SIZE
OPT_DEFS += -DBOOTLOADER_SIZE=$(strip $(BOOTLOADER_SIZE))

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@ -289,6 +289,7 @@ This is a [make](https://www.gnu.org/software/make/manual/make.html) file that i
* `halfkay`
* `caterina`
* `bootloadHID`
* `USBasp`
## Feature Options

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@ -119,6 +119,31 @@ Flashing sequence:
3. Flash a .hex file
4. Reset the device into application mode (may be done automatically)
## USBasploader
USBasploader is a bootloader developed by matrixstorm. It is used in some non-USB AVR chips such as the ATmega328P, which run V-USB.
To ensure compatibility with the USBasploader bootloader, make sure this block is present in your `rules.mk`:
# Bootloader
# This definition is optional, and if your keyboard supports multiple bootloaders of
# different sizes, comment this out, and the correct address will be loaded
# automatically (+60). See bootloader.mk for all options.
BOOTLOADER = USBasp
Compatible flashers:
* [QMK Toolbox](https://github.com/qmk/qmk_toolbox/releases) (recommended GUI)
* [avrdude](http://www.nongnu.org/avrdude/) with the `usbasp` programmer
* [AVRDUDESS](https://github.com/zkemble/AVRDUDESS)
Flashing sequence:
1. Press the `RESET` keycode, or keep the boot pin shorted to GND while quickly shorting RST to GND
2. Wait for the OS to detect the device
3. Flash a .hex file
4. Reset the device into application mode (may be done automatically)
## STM32
All STM32 chips come preloaded with a factory bootloader that cannot be modified nor deleted. Some STM32 chips have bootloaders that do not come with USB programming (e.g. STM32F103) but the process is still the same.

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@ -49,7 +49,7 @@ OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
# atmega32a bootloadHID
#
# This uses usbaspbootloader
# BOOTLOADER = atmel-dfu
BOOTLOADER = USBasp
# If you don't know the bootloader type, then you can specify the
# Boot Section Size in *bytes* by uncommenting out the OPT_DEFS line
@ -58,8 +58,6 @@ OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
# Atmel DFU loader 4096
# LUFA bootloader 4096
# USBaspLoader 2048
# OPT_DEFS += -DBOOTLOADER_SIZE=4096
OPT_DEFS += -DBOOTLOADER_SIZE=2048
# Flash program via avrdude, but default command is not suitable.
# You can use plaid:default:program

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@ -245,6 +245,10 @@ avrdude-split-left: $(BUILD_DIR)/$(TARGET).hex check-size cpfirmware
avrdude-split-right: $(BUILD_DIR)/$(TARGET).hex check-size cpfirmware
$(call EXEC_AVRDUDE,eeprom-righthand.eep)
usbasp: $(BUILD_DIR)/$(TARGET).hex check-size cpfirmware
avrdude -p $(MCU) -c usbasp -U flash:w:$(BUILD_DIR)/$(TARGET).hex
# Convert hex to bin.
bin: $(BUILD_DIR)/$(TARGET).hex
$(OBJCOPY) -Iihex -Obinary $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin

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@ -65,6 +65,13 @@
#define BOOT_SIZE_1024 0b010
#define BOOT_SIZE_2048 0b000
//compatibility between ATMega8 and ATMega88
#if !defined (MCUCSR)
#if defined (MCUSR)
#define MCUCSR MCUSR
#endif
#endif
/** \brief Entering the Bootloader via Software
*
* http://www.fourwalledcubicle.com/files/LUFA/Doc/120730/html/_page__software_bootloader_start.html
@ -149,6 +156,39 @@ void bootloader_jump(void) {
while(1) {} // wait for watchdog timer to trigger
#elif defined(BOOTLOADER_USBASP)
// Taken with permission of Stephan Baerwolf from https://github.com/tinyusbboard/API/blob/master/apipage.c
wdt_enable(WDTO_15MS);
wdt_reset();
asm volatile (
"cli \n\t"
"ldi r29 , %[ramendhi] \n\t"
"ldi r28 , %[ramendlo] \n\t"
#if (FLASHEND>131071)
"ldi r18 , %[bootaddrhi] \n\t"
"st Y+, r18 \n\t"
#endif
"ldi r18 , %[bootaddrme] \n\t"
"st Y+, r18 \n\t"
"ldi r18 , %[bootaddrlo] \n\t"
"st Y+, r18 \n\t"
"out %[mcucsrio], __zero_reg__ \n\t"
"bootloader_startup_loop%=: \n\t"
"rjmp bootloader_startup_loop%= \n\t"
:
: [mcucsrio] "I" (_SFR_IO_ADDR(MCUCSR)),
#if (FLASHEND>131071)
[ramendhi] "M" (((RAMEND - 2) >> 8) & 0xff),
[ramendlo] "M" (((RAMEND - 2) >> 0) & 0xff),
[bootaddrhi] "M" ((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >>16) & 0xff),
#else
[ramendhi] "M" (((RAMEND - 1) >> 8) & 0xff),
[ramendlo] "M" (((RAMEND - 1) >> 0) & 0xff),
#endif
[bootaddrme] "M" ((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 8) & 0xff),
[bootaddrlo] "M" ((((FLASH_SIZE - BOOTLOADER_SIZE) >> 1) >> 0) & 0xff)
);
#else // Assume remaining boards are DFU, even if the flag isn't set
#if !(defined(__AVR_ATmega32A__) || defined(__AVR_ATmega328P__)) // no USB - maybe BOOTLOADER_BOOTLOADHID instead though?
@ -172,24 +212,19 @@ void bootloader_jump(void) {
}
#ifdef __AVR_ATmega32A__
// MCUSR is actually called MCUCSR in ATmega32A
#define MCUSR MCUCSR
#endif
/* this runs before main() */
void bootloader_jump_after_watchdog_reset(void) __attribute__ ((used, naked, section (".init3")));
void bootloader_jump_after_watchdog_reset(void)
{
#ifndef BOOTLOADER_HALFKAY
if ((MCUSR & (1<<WDRF)) && reset_key == BOOTLOADER_RESET_KEY) {
if ((MCUCSR & (1<<WDRF)) && reset_key == BOOTLOADER_RESET_KEY) {
reset_key = 0;
// My custom USBasploader requires this to come up.
MCUSR = 0;
MCUCSR = 0;
// Seems like Teensy halfkay loader requires clearing WDRF and disabling watchdog.
MCUSR &= ~(1<<WDRF);
MCUCSR &= ~(1<<WDRF);
wdt_disable();
@ -202,29 +237,3 @@ void bootloader_jump_after_watchdog_reset(void)
}
#endif
}
#if 0
/*
* USBaspLoader - I'm not sure if this is used at all in any projects
* would love to support it if it is -Jack
*/
#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
// This makes custom USBasploader come up.
MCUSR = 0;
// initialize ports
PORTB = 0; PORTC= 0; PORTD = 0;
DDRB = 0; DDRC= 0; DDRD = 0;
// disable interrupts
EIMSK = 0; EECR = 0; SPCR = 0;
ACSR = 0; SPMCSR = 0; WDTCSR = 0; PCICR = 0;
TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0;
ADCSRA = 0; TWCR = 0; UCSR0B = 0;
#endif
// This is compled into 'icall', address should be in word unit, not byte.
((void (*)(void))(BOOTLOADER_START/2))();
}
#endif